Machine for making clothes pegs



June 23, 1931. K. PRONNECKE MACHINE FOR MAKING CLOTHES PEGS Filed Sept. 15, 1950 2 Sheets-Sheet 1 F 5655. an

lol

June 23, 1931. K. PRONNECKE 1,811,559

MACHINE FOR MAKING CLOTHES PEGS Filed Sept. 15, 1930 2 Sheets-Sheet 2 Patented Junezs, 1931 UNITED STATES FPATENTQIOFFICE p rRoNnEcKE, or QUEDIVIINBURG," HABZ, GERMANY MAc IN I r012. MAKI G CLOTHES recs Application filed September 15, 1930, Serial No. 481,955, and in Ge rman y Novemter 27,1929. a r

This invention relates to a machine for making clothes pegs, one, arm of which is provlded on the lnnerside with a raised curved surface and the other with a cavity.

5 In the new machine two carriage guides for the peg blanks are arranged eccentrically to a drum, which carriages, during the rotation oi the drunnare fed past a coned mllling out ter, which, as the. peg blank is passing by,

is mills the raised curve on the one peg arm and the cavity in the other peg arm. The drum performs a half revolution at each operation and on the stopping of the drum the finished milled peg is ejected from oneoarriage guide and at thesame time a fresh unworked peg blank is inserted inthe second carriage guide.

An embodiment of the invention is illustrated by way of example 'in the accompany ing drawings in which f Fig. 1 shows the machine in longitudinal section. p Q V Fig. 2 is a top plan view, of the machine. Fig. 3 is a vertical'section. I Fig. 4 shows in partial longitudinal section a modified construction of the tool.

Fig. 5 is a cross section of Fig. 4.

The pegblanka, one arm of which isto" be provided on the inner side with a raised curved surface 6. and the other with a cavity 0 (Fig. 8), are carried by a drum cl, on which two carriage guides 7", f for accommodating the peg blank, are arranged eccentrically to the drum axle e, which blanks are conveyed during the rotation of the drumpast a coned milling cutter grevolving above thedruni axle, which cutter has the shape of the peg slot and is provided with straightv orspiral shaped teeth, so that, as the peg blank is pass ing by, it mills the raised curved surface 6 on'one peg arm and the cavity 0 in the other. In order to protect the drum cl against vibra-. tion during the working of the cutter 9, it

may be carried by a bearing h of suitable construction (Fig.1). A spur wheel i'is fixed on the drum (2 and meshes with a spur wheel 71 of like size (Fig. 3), whichis only pro-- vided with teeth on one half ofits circumference, so that the drum d performs a half revolution during each complete revolution of the spurwheel 2" and remains stationary so that the rods 7 i the springs Z, Z

is not to be efiiected automatically, tied device; shown .in Figs. 4 and employed but this slows down .Thje tool employed therefor consists of. a

Z 7 wh ch are held together by a sleeve g and a to "same by pins 25,

until the teeth of the wheel 2" again engage in the spur wheelz'. v VVhilst the drum (lie at rest, the e ection ofthe finished ega' from the carriageguide f and the insertion of a guided by springsllflfl Under the rods la, 70, racks m, miareifixedin which piriions ma" engage, which are provided with'teethon half their periphery. As soon as the teeth of the-pin ions n, 77; engage in theracks m, in the rams j, j are shifted in "the direction of the arrows and thepull springs Z, Z tensioned, is, 7c are pulled back with the rams j, y" intotheir initialposition by as soon as the toothed por tion of the wheels 7, n releases the racks 1m, m; The return thrustof the rods is can be damped by butter springs. The rods Zr, is are preferably guided in bearing sleeves 0, "0, whereas the rams 'j, j are guided inthe bearings e of; the drumaxle e.

. The peg blanks may also be guided in a straight path past the vcutter g,the working f the pegs being then effected by the rotary cutter. r

. n? the guiding of the pbg blanks to'the e001 5-, maybe the work;

conical drum,composed of two parts .79,

screw r. The drum'terminates in a square 8, whlch 1s clamped 1nthe check of the drivng mechanism, through which the drum is rotated. Two blades t are inserted between the two drum parts 79, go and held between which engage in theVabut- J ting surfaces oithedrum parts p, p; The

black i on the inner and cutersideand their apecorrespon'ds to the cut out porthe simpli-' project beyondtheicircumference of raised curved surface 6 and the cavity 0, the peg blank a2 need only be fed positively against the edge of the drum up to a collar u of the drum, the blades 25 working the peg accordingly. The chips drop out through apertures w, formed in the drum. For producing the clothes pegs with this simplified tool, blanks a2 of rectangular cross section are made in the length of two pegs, which,

m after one peg has been cut, are reversed, in order to enable the other peg to be also worked in a similar manner, after which the peg blank is severed, in the middle in the direction shown by the dotted line 0 (Fig. 4)

I claim In a machine for working clothes pegs, the combination of a drum, an axle carrying said drum, a rotary milling cutter arranged above said axle adapted to cut a raised curved sur- 220 face on the inner side of one arm of the peg and a cavity in the other arm in a single operation, carriage guides arranged eccentrically on said drum adapted to accommodate the peg blanks and feed said blanks past said cutter, means for periodically stopping said drum after every half revolution and means for ejecting the finished milled pegs out of one of said carriage guides and for inserting a freshpeg blank in the other of said carriage 3U guides.

In testimony whereof I aifix my signature. KARL PRONNECKE 

